Injector hatchet



Sept. 30, 1958 J. M. HASH INJEcToR HATCHET Filed March 23, 195e A Mw United States Patent 2,853,833 INJEcToR HATcrrETy i `lames M. Hash, Miami, Okla.

Application March 23,1956, Serial No. 573,407

s c1aims."' c1f 4.1;'si.s

This invention relates to improvements in tools for treating trees and more especially to an injector hatchet.

An object of the invention is to provide a hatchet having a head provided with a plunger and a lluid supply connected to the head so that every time a blow is struck with the hatchet, uid will be forced into the tree.

Many tools have been provided for treating diseased trees, some require holes to be bored into the tree to receive the tool so that a fluid can be injected into a tree, but such tools require separate operations.

Another object of the invention is, therefore, to provide a tool that will cut the tree and inject tluid into the tree at the time the cut is made.

With the above and other objects and advantages in view, the invention consists of the novel details of construction, arrangement and combination of parts more fully hereinafter described, claimed and illustrated in the accompanying drawing in which:

Fig. 1 is a longitudinal sectional view, partly broken away, of a tool embodying the invention;

Fig. 2 is an elevational view of the head of the tool with the handle broken away; and

Fig. 3 is a vertical sectional view on the line 3-3 of Fig. l.

Referring more in detail to the drawing, wherein like parts are designated by like reference numerals, the hatchet or tool embodying the invention is generally designated by the reference numeral 10.

The hatchet comprises an impact head 11 having a butt end 12 and cutting edge 13.

A plunger cylinder or cavity 14 is positioned in the center of the head 11 and is provided with an open end 15 in the butt end 12 and the open end 15 is closed by a screw plug 16. The cylinder 14 has a reduced end portion 17 that communicates with a passage 18. Extending at right angles to the passage 18 is a cavity 19 having an open end 20 that is closed by an adjustable screw plug 21. A valve seatl 22 isprovided at the junction of the passage 18 and cavity 19 to receive a ball valve 23 and a compression spring 24 mounted in the cavity 19 engages the ball valve 23 and urges it into the valve `seat 22.

A common passage 25 communicates with the cavity 19 at one end and with a fluid feeding passage 26 at the opposite end.

.The passage 26 extends transversely of the head 11 and is positioned adjacent the cutting edge 13 of the head 11, as shown in Fig. 3, and it is to be noted that the cutting edge is wider at the outer ends of the passage 26.

A plunger 27 is slidably mounted in the cylinder 14 and a compressor spring 28 mounted in the cylinder 14 engages the projection 29 on one end of the plunger 27 and the end of the end portion 17 of the cylinder 14 as shown in Fig. l.

Extending at right angles to the head 11 is a threaded extension 30 which is provided with a passage 31. The junction of the passage 31 and the cylinder 14 provides a valve seat 32 for a ball valve 33. A coupling plug 34 for a exible hose 35 isy received inthe open end 36 of the passage 31 and a compression spring 37 is'mounted in the passage31 and engages the ball valve 33 to urge the same into engagement with the seat 32.

A handle 38 has a'longitudinally extending bore 39 which is provided to receive the hose 35 as it leaves the head 11 and a coupling nut 40 engaging the projection 30 retains the handle 38 in fixed relation to thehead 11. The handle 38 has an enlarged tapered portion 41 where provided on the handle 38. The projection 30 is also' provided with a cavity 42 that is circumjacent to the plug 34 so that the plug will not be engaged and damaged by the end of the handle 38. l

The hose 35 is connected to a pressure tank containing fluid, not shown, that is usually carried on the back of the operator.

In operation the cutting edge 13 of the head 11 will be struck into a log or something to cause the plunger 27 to move downwardly within the cylinder 14, such action will cause the plunger 27 to engage and unseat the ball valve 33 so that uid from the hose 35 will pass into the cylinder 14 to the rear of the plunger 27. When the plunger 27 returns to its normal position, as shown in Fig. 1, the iluid will vpass around the plunger to the front thereof.

With the cylinder 14 full of uid, every time a blow is struck with the hatchet 10 the plunger 27 `will move downwardly in the cylinder 14 and force the uid in the cylinder through the passage 18, cavity 19 and passages 25 and 26 into the cut made in the tree. In viewing Fig. 2, it will be noted that the spring 28 is entirely received within the end portion 17 of the cylinder 14 whenI the plunger 27 has made its complete downward movement. Thus, the majority of the uid in the cylinder 14 is completely forced therefrom.

When the plunger is in the position, as in Fig. 1, ball valve 33 is seated so that lluid will not enter the cylinder 14 from the tank and ball valve 23 is seated so that fluid will not drip from the ends of the passage 26.

Thus, every time a cut is made in the tree by the cutting edge 13, fluid will be injected into the cut by the movement of the plunger 27 and the action'of the 'plunger 27 engaging the ball valve 33 will again lill the cylinder 14 with iluid.

It is believed that from the foregoing descriptions that the structure and operation of the hatchet embodying the invention will be clear to those skilled in the art and it is to be understood that changes in the minor details of construction, arrangement and combination of parts maybe resorted to provided they fall within the spirit of the invention and the scope of the appended claims.

Having thus described the invention what is claimed as new and desired to be secured by Letters P atent is:

1. A tool for injecting fluid into a treel comprising an impact head having a cutting edge thereon, a cylinder in said head, a plunger in said cylinder, a handle for said head, a flexible hose passing through said handle and communicating with said cylinder to feed uid to said cylinder, a series of passages communicating with said cylinder, one of said passages extending transversely of said head so that as said cutting edge is driven into a tree fluid will pass outwardly of said one passage to l enter the cut' made in the tree by said cutting edge.

said edge, said head having a passageway interconnecting" said cylinder and the edge portion of the head, an Out- Patfenfed 4sept. 3o, 195s A; toolL forA` injecting, fluid into a, tree corn-prising;i a-

head. havingl a? sharpened edge, ai handle, for said' head, a cylinder in said heada pistonrfreelyh mounted, insaid cy1indera .spri`ng normally urgingaidi'piston away from said, edgega-v transverse passagefextendingthrough Y said.

headfadjacentihe.sharpened edge thereof, saidvhead having-:a passageway interconnecting said: cylinder and the transverse passageway, an outletvalve. in said-passage way, saidliead`havii1g an inletopening. connectedwith, said cylinder, anY inlet valve in said opening, and' a l liquid.

supply tube extending through said handle to said inlet opening.

References Cited in the ile of this patent UNITED STATES PATENTS 1,536,872 Bailey May 5, 1925 1,848,601 Blanchardl Mar. 8, 1932 2,687,598 Calhoun Aug. 31, 1954 2,747,330 SimpkiusA May 29, 1956 FOREIGN PATENTS 10,197 Australia ,.of.;` 1913 8,852 Austria Aug. 25, 1902 332,006 GeabBritainw. July 17, 1930 

